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Hepatitis B Virus Genotype Determination (Serum/Plasma)

Published: August 9, 2026Updated: August 16, 2026

This test helps identify which specific genotype of the Hepatitis B virus you may have, which can inform treatment decisions and monitoring.

Quick summary

["Understanding your Hepatitis B genotype can guide your healthcare provider’s approach to managing your infection."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
72843-6
Short code
HBV 215 Islt Genotyp
Synonyms
HBV 215 Islt Genotyp
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
genotyping
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Matters

Hepatitis B virus (HBV) exists in multiple genotypes, each with slightly different behaviors and responses to treatment. This test uses a genetic analysis to determine which genotype you have, helping your doctor tailor your care plan.

How the Test Works

A small blood sample is taken from you and sent to a lab. The lab uses advanced genetic testing to examine the virus’s DNA sequence, identifying which HBV genotype is present in your blood.

Sample Collection and Preparation

You will have a simple blood draw, usually from your arm. The blood sample is processed and sent to a specialized lab for genetic analysis. No special preparation is needed before the test.

What to Expect After the Test

Results typically take several days to a week to return. Your healthcare provider will discuss the findings with you and explain how they may affect your treatment or monitoring plan.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Hepatitis B Genotype Test

Frequently asked questions

How long does it take to get the results of this test?
Results usually take between 5 to 10 business days, depending on lab processing times. Your healthcare provider will contact you once the results are ready.
Is there any special preparation needed before this test?
No special preparation is required. You can eat, drink, or take medications as usual on the day of your blood draw.
Can this test be done on other types of specimens besides blood?
This test is performed on serum or plasma from a blood sample. If you have questions about alternative testing options, discuss them with your healthcare provider.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy